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Annotation of researchv10dc/dist/man/v3/man4/tc.4, revision 1.1.1.1

1.1       root        1: .pa 1
                      2: .he 'TC (IV)'3/15/72'TC (IV)'
                      3: .ti 0
                      4: NAME           tc -- TC-11/TU56 DECtape
                      5: .sp
                      6: .ti 0
                      7: DESCRIPTION    The
                      8: files tap0 ... tap7 refer to the
                      9: TC-11/TU56 DECtape drives 0 to 7.
                     10: Since the logical drive number can be manually set,
                     11: all eight files exist even though at present there are fewer
                     12: physical drives.
                     13: 
                     14: The 256-word blocks on a standard DECtape are numbered 0 to 577.
                     15: However, the system makes no assumption about this number;
                     16: a block can be read or written if it exists on the
                     17: tape and not otherwise.
                     18: An error is returned if a transaction
                     19: is attempted for a block which does not exist.
                     20: 
                     21: Addressing on the tape files, like that on the
                     22: RK and RF disks, is block-oriented.
                     23: .sp
                     24: .ti 0
                     25: FILES          /dev/tap?
                     26: .sp
                     27: .ti 0
                     28: SEE ALSO       rf(IV), tap(I)
                     29: .sp
                     30: .ti 0
                     31: BUGS           see rf(IV)

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